Hose-coupling.



No. 862,349. PATENTBD AUG. 6, 1907.

- A; R. ROBBINS.

HOSE COUPLING.

APPLIOA'TION FILED me. a, 1904.

Witness (EM 43 I 1n: mums PETERS ca, wAsmnarmv. n. c.

PATENT OFFICE.

ALFRED R. ROBBINS, OF OCEANPARK, CALIFORNIA.

HOSE-COUPLING.

Specification of Letters Patent.

Patented Aug. 6, 1907.

Application filed August 8, 1904. Serial No. 219,931-

To all whom "it may concern:

Be it known that I, ALFRED R. ROBBINS, a citizen of the United States,residing at Oceanpark, in the county of Los Angeles and State ofCalifornia, have invented a new and useful Improvement inHose-Couplings. of which the following is a specification.

The object of this invention is a coupler adapted for uniting sectionsof hose, the union being quickly, easily, and securely made, and thesections as easily and quickly detached when desirable.

A further object of the invention is to provide a coupler of this kindwhich will not diminish the diameter of the hose or pipe line as awhole, and which will not offer any obstruction to the flow of a liquidthrough the coupling by reason of a constricted passageway or inwardlyprojecting shoulders.

With these objects in view the invention consists in the novel featuresof construction and combination of parts hereinafter described,particularly pointed out in the claims, and shown in the accompanyingdrawings, in which: 7

Figure 1 is a detail perspective view of my coupling. Fig. 2 is alongitudinal section through the coupling and adjacent hose sections.Fig. 3 is a detail side elevation showing the parts uncoupled.

In these drawings A, and A, represents sections of hose to be united bymy coupling. A cylindrical metal sleeve B, preferably of brass isprovided having an interior diameter equal to the interior diameter ofthe hose sections A and A. i

The sleeve B, is exteriorly tapered or reduced in thickness toward eachend, as most clearly shown in Fig. 2, and is exterior-1ycircumferentially grooved as shown at B. The expanded portions of thesleeve adjacent to the circumferential groove forming a circumferentialshoulder B for the purpose hereinafter set forth. This groove (incoupling) forms a space for the natural expansion of the protruding endsof the hose sections A and A, within the coupling and also enables thesleeve to be securely grasped by the fingers when the sleeve is to beremoved from the end of a hose section. I also provide two metalcoupling sections, also preferably of brass and shown at C, and C. Neartheir rear ends these sections have an interior diametersubstantiallyequal to the exteriordiameter of the hose, this diameter ismaintained towards the meeting ends for a distance approximatingtwo-thirds of the entire length of each section of C, and C, theinterior diameters of the coupling sections C, and C, then graduallyincreasing interiorly toward their meeting ends thereby forming anoffset or shoulder C interiorly to act (in coupling together) as aninside circumferential shoulder opposite to the circumferentialshoulders provided exteriorly on the sleeve B, aforementioned. The rearends of coupling sections 0, and O, are also beveled exteriorly at Ccircumferentially to permit of the easy insertion of the hose ends A,and A, within the sections 0, and G. The coupling section G, carries atits meeting end, which is cut spirally, semi-circular, spirally arrangedshoulders C the ends of the shoulders being offset with reference toeach other, due to the offset portions C The section C, of the couplingis also spirally cut at the meeting end to fit the meeting end of thesection 0, and carries oppositely arranged, projecting flanges 0 adaptedto engage the shoulders or threads C carried by the section 0, andthereby lock the two sections together by giving a half turn to eithersection.

In assembling the parts of the section A, of the hose is inserted orfitted in section G, of the coupler, and the section A, of the hose insection 0, of the coupler, though this arrangement could of course bereversed. The sleeve B, is then pressed into one of the couplingsections, and I have illustrated it as being secured in the couplingsection O. The section 0, of the coupler is then secured to the sectionG, in the usual manner of joining two threaded sections, and it will benoted that the sleeve B, is entirely inclosed by the coupler sections G,and C, and that near to the adjacent ends of the hose sections A, and A,are gripped and slightly compressed between the circumferentialshoulders or offsets on the sleeve B, and their opposites orcorressponding interior shoulders on said coupler sections C, and C, thehose ends protruding within the space allowed by the expansion ofsections C, and C, and the groove on B, and B, and it will befurthermore noted that instead of the hose sections being compressedinwardly, thus having their mean diameter decreased, that the ends ofthe sleeve B, fit into the said hose sec tions and expand them adjacenttheir ends. By this means a very secure coupling is provided withoutfurnishing any obstacle to the flow of liquid. I

Having thus fully described my invention, what I claim as new and desireto secure by Letters Patent is 1. A coupler of the kind describedcomprising a section having a spiral shoulder at its end, a sectionhaving diametrically opposite projecting flange portions adapted toengage the shoulder of the first mentioned section, and a sleeve adaptedto lie within the said sections, the sleeve tapering exteriorly towardits ends and circumferentially grooved midway its ends, as and for thepurpose set forth.

2. A coupler of the kind described comprising a section having a spiralshoulder at its end, a section having diametrically opposite projectingflange portions adapted to engage the shoulder of the first mentionedsection, and a sleeve adapted to lie within the said sections, thesleeve tapering exterior-1y toward its end, and circumferentiallygrooved midway its ends, as and for the purpose set forth.

ALFRED R. ROBBINS.

Witnesses:

T. H. DUDLEY, A. J. WILKINS.

